Impact of pCO2 on the energy, reproduction and growth of the shell of the pearl oyster Pinctada margaritifera

摘要: The possible consequences of acidification on pearl farming are disruption oyster metabolism and change in growth. In the laboratory, we studied impact pCO2 (3540, 1338 541μatm) physiology oysters exposed for 100 days. This experiment was repeated after an interval one year. Several physiological compartments were examined oysters: scope growth by measuring ingestion, assimilation oxygen consumption, gametogenesis means histological observations, shell measurement observation optical electronic microscopy, at molecular level expression nine genes mantle cells implied biomineralisation process. Results from both experiments showed that high had no effect gametogenesis. High (3540 μatm) significantly slowed down deposit rate ventral side SEM observations inside found signs chemical dissolution. Of pCO2significantly decreased gene (Pmarg-PUSP 6). study would be without threatening species since management energy reproduction functions appeared to preserved. Further investigations should conducted response offspring acidification.